[quote=Jett Ryu]
It's anime-based. Does hair and eye color have to make sense beyond looking attractive?
[/quote]

Usually I'd say no, but it seems like there are patterns with colors. Monty Oum is huge on symbolism and things actually meaning something in his work--I don't think he'd just assign random colors without rhyme or reason. 

But even if I thought colors and such were assigned without reason, I'd still stick with the idea that Weiss is albino because I like the idea. uwu